Cushion|Natural|GIA

0.31ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6555180814

Certificate GIA 6555180814

Diamond specifications and retailer prices

From $299 USD
₹28,495 INR
As of October 31, 2026
Save $661 USD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $960 USD at MOH London · As of November 1, 2026
View at MOH London

About this 0.31ct natural cushion diamond

This 0.31ct natural cushion sits in the sub-half-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 6555180814. Listed at 11 retailers as of October 31, 2026, with prices from $299 to $960, a $661 spread on the same certified stone. MOH London lists it at $960. 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

0.31
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555180814
Dimensions3.84 × 3.82 × 2.55 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
3.84 mm3.82 mm0.31 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6555180814
Side View
Table 63.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $960 USD|Low: $298 USD|High: $972 USD|Avg: $612 USD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3$299 USD
Retailer 6$448 USD
Retailer 2$515 USD
Retailer 7$570 USD
Retailer 5$645 USD
Retailer 8$666 USD
Retailer 4$669 USD
MOH London$960 USD

36 data points across 8 retailers

11 retailers$299 USD to $960 USD

A
Cheapest Retailer
-
$299 USD
₹28,495 INR
A
Retailer 2
-
$448 USD
View
B+
Retailer 3
-
$480 USD
View
B+
Retailer 4
-
$515 USD
£405 GBP
View
B+
Retailer 5
-
$551 USD
View
B+
Retailer 6
-
$570 USD
£449 GBP
View
B+
Retailer 7
-
$594 USD
View
B+
Retailer 8
-
$645 USD
ZAR 10,412 ZAR
View
Retailer 9
-
$666 USD
A$1,024 AUD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$669 USD
€637 EUR
View
Most Expensive
B
MOH London
993528188 · Nov 1
$960 USD
£756 GBP
View
10 more retailers have this diamond
Prices start from $299 USDSave up to $661 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
0.31ct Cushion
$299 USD