Estimate only; actual diamond prices vary by cut, colour, clarity, certification, origin, seller, setting, taxes and current market conditions.
A diamond quotation can contain a price per carat, stone weight and separate setting or certification charges. The Diamond Price per Carat Calculator Philippines combines these figures so you can review the quoted total in Philippine pesos.
The tool does not assign a market price or grade a diamond. You must enter the price supplied by the jeweller, dealer, appraisal report or other source.
What Is the Diamond Price per Carat Calculator Philippines?
The calculator converts a quoted price per carat into an estimated total price for one or more diamonds. It also applies a percentage discount or premium and adds any separately quoted charges.
The calculation uses:
- Quoted price per carat in pesos
- Carat weight of each diamond
- Number of diamonds
- Discount or premium percentage
- Additional peso charges
Use a negative percentage for a discount and a positive percentage for a premium. Enter zero when neither adjustment applies.
Other tools for precious materials, currencies and financial planning are available through the Philippine calculator platform. Their results measure different values and should not be treated as diamond appraisals.
How to Use the Diamond Price Calculator
Begin with the price per carat stated in the quotation. If a foreign seller quotes the diamond in US dollars, convert the quotation to pesos before entering it.
Next, check the certified or quoted carat weight of each stone. Carat is a weight measurement and should not be confused with the visible diameter of a diamond.
Complete the fields as follows:
- Enter the quoted peso price per carat.
- Enter the carat weight of one diamond.
- Enter the number of diamonds with the same price and weight.
- Add a negative percentage for a discount or a positive percentage for a premium.
- Enter any separate setting, certification, delivery or quoted charges.
- Select “Calculate.”
- Review the base value, adjustment and estimated final price.
Calculate different diamonds separately when they have different weights, grades or prices per carat.
Formula Used by the Calculator
The base price of one diamond is:
Price per diamond = Price per carat × Carat weight
For multiple identical diamonds:
Base total = Price per carat × Carat weight × Number of diamonds
The percentage adjustment is:
Adjustment amount = Base total × Adjustment percentage ÷ 100
The estimated final price is:
Final price = Base total + Adjustment amount + Additional charges
A negative adjustment reduces the total, while a positive adjustment increases it.
The calculator may also show an effective price per diamond:
Effective price per diamond = Final price ÷ Number of diamonds
These formulas only calculate the quotation you enter. They do not determine whether the quoted price is fair.
How to Calculate Diamond Price Step by Step Using Example Values
The calculator displays these example values:
- Quoted price per carat: ₱250,000
- Carat weight per diamond: 0.75 carat
- Number of diamonds: 1
- Discount or premium: 0%
- Additional charges: ₱0
Step 1: Calculate the Base Diamond Price
Multiply the quoted price per carat by the diamond’s weight:
₱250,000 × 0.75 = ₱187,500
The calculated base value of the 0.75-carat diamond is ₱187,500.
Step 2: Apply the Quantity
The quotation contains one diamond:
₱187,500 × 1 = ₱187,500
If the quotation covered two identical 0.75-carat diamonds at the same price per carat, the base total would be:
₱187,500 × 2 = ₱375,000
Do not use the quantity field for a mixed parcel unless every diamond has the same relevant weight and price basis.
Step 3: Apply the Discount or Premium
The example adjustment is 0%:
₱187,500 × 0% = ₱0
The adjusted subtotal remains:
₱187,500 + ₱0 = ₱187,500
For comparison, a 5% discount would be entered as −5:
₱187,500 × −5% = −₱9,375
Discounted subtotal = ₱178,125
A 10% premium would be entered as 10:
₱187,500 × 10% = ₱18,750
Premium-adjusted subtotal = ₱206,250
Step 4: Add Separate Charges
The example contains no additional charges:
₱187,500 + ₱0 = ₱187,500
The calculator should therefore show:
- Base price: ₱187,500
- Percentage adjustment: ₱0
- Additional charges: ₱0
- Estimated final price: ₱187,500
- Effective price per diamond: ₱187,500
The result is a mathematical quotation estimate, not an independent valuation.
Converting a Foreign Diamond Quotation
International diamond quotations may be provided in US dollars. Exchange rates, card conversion spreads and transfer fees can affect the peso amount paid.
Use the Dollar to Philippine Peso Calculator to convert the foreign quotation first. Then enter the converted peso price per carat in this calculator.
Label the exchange rate and date used because currency values can change before payment is completed. Import costs and taxes may also apply separately.
Diamond Price Versus Gold Value
Diamond pricing is not calculated in the same way as gold. Gold is commonly valued using weight, purity and a quoted price per gram, while diamonds are assessed through carat weight and quality characteristics.
The Gold Calculator Philippines should be used separately for gold content or jewellery metal value. A diamond ring may contain both a diamond and a gold setting, so each component may need its own calculation.
Do not assume the retail price of the complete ring equals the recoverable value of its separate materials.
Should a Diamond Be Treated as an Investment?
A retail diamond purchase does not guarantee capital growth or easy resale. Dealer margins, certification, market demand and the difference between retail and resale prices can affect the amount recovered.
The Investment Calculator Philippines projects growth from a financial return assumption and regular contributions. It does not forecast diamond prices and should not be used to justify an expected jewellery return.
Buyers should distinguish personal or sentimental value from expected financial performance.
Factors the Calculator Cannot Assess
Two diamonds with the same carat weight can have very different prices. The calculator cannot evaluate the commonly referenced quality characteristics:
- Cut
- Colour
- Clarity
- Carat-weight pricing brackets
- Shape
- Fluorescence
- Proportions and symmetry
- Natural or laboratory-grown origin
- Treatment or enhancement
- Certification
- Brand and retailer margin
- Current resale demand
It also cannot inspect whether a certificate matches the actual stone.
When buying from an online merchant, review the seller’s identity, written product description, return terms and supporting documents. Philippine consumers can consult the DTI for consumer information and applicable rights.
Important Calculator Limitations
The calculator does not access a live diamond-price database. It cannot provide an official appraisal, insurance replacement value or guaranteed resale price.
Additional charges must be entered manually. These may include:
- Jewellery setting
- Independent certification
- Delivery and insurance
- Resizing
- Taxes or import charges
- Seller service fees
Ask the seller whether the quoted per-carat amount already includes any of these items. Otherwise, a charge may be counted twice.
A professional appraisal may be appropriate for insurance, estate administration, high-value purchases or resale decisions.
Common Mistakes to Avoid
Do not enter total price in the price-per-carat field. The calculator multiplies that field by the carat weight.
Avoid confusing carat with karat. Carat measures gemstone weight, while karat commonly describes gold purity.
Use the correct sign for the percentage adjustment. Enter −5 for a 5% discount and 5 for a 5% premium.
Do not combine diamonds with different weights or grades as identical units. Calculate each stone separately and add the totals.
Finally, do not assume that a higher quoted price proves higher quality. Review the grading information and the seller’s documentation.
Frequently Asked Questions
Q1: Does the calculator find the current diamond market price?
A: No. You supply the quoted price per carat. The calculator only processes the entered quotation.
Q2: How much is the example 0.75-carat diamond?
A: At ₱250,000 per carat, one 0.75-carat diamond has a calculated base price of ₱187,500 before other adjustments.
Q3: How do I enter a discount?
A: Enter a negative value. For example, enter −5 for a 5% discount.
Q4: Can I calculate several diamonds together?
A: Yes, when they have the same carat weight and quoted price per carat. Calculate different stones separately.
Q5: Does carat describe diamond size?
A: Carat measures weight. Visible dimensions can differ because of shape, cut and proportions.
Q6: Does the result include certification and setting costs?
A: Only when you enter those costs under additional charges or they are already included in the quoted price.
Q7: Is the result an official appraisal?
A: No. It is an estimate based on your entries and cannot replace inspection or valuation by a qualified professional.