Radiant|Natural|GIA

3.18ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6505032942

Certificate GIA 6505032942

Diamond specifications and retailer prices

From $36,761 USD
As of October 31, 2026
Save $9,658 USD (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $46,419 USD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 3.18ct natural radiant diamond

This 3.18ct natural radiant sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6505032942. Listed at 7 retailers as of October 31, 2026, with prices from $36,761 to $46,419, a $9,658 spread on the same certified stone. 77 Diamonds lists it at $46,419. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.18
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6505032942
Dimensions9.62 × 7.40 × 5.02 mm
L/W Ratio1.30
Top View
9.62 mm7.40 mm3.18 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6505032942
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $46,419 USD|Low: $36,761 USD|High: $46,892 USD|Avg: $40,818 USD|+1.5%
77 Diamonds
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$36,761 USD
Retailer 2$38,515 USD
77 Diamonds$46,419 USD

46 data points across 3 retailers

7 retailers$36,761 USD to $46,419 USD

A
Cheapest Retailer
-
$36,761 USD
A
Retailer 2
-
$38,515 USD
₹3,668,070 INR
View
A
Retailer 3
-
$38,982 USD
View
A
Retailer 4
-
$39,533 USD
View
A
Retailer 5
-
$39,901 USD
View
A
Retailer 6
-
$40,509 USD
A$62,322 AUD
View
Most Expensive
B+
77 Diamonds
RADMBYMZYNBSH · Nov 2
$46,419 USD
£36,551 GBP
View
6 more retailers have this diamond
Prices start from $36,761 USDSave up to $9,658 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.18ct Radiant
$36,761 USD