Cushion|Natural|GIA

3.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6422655354

Certificate GIA 6422655354

Diamond specifications and retailer prices

From $44,078 USD
As of November 7, 2026
Save $24,370 USD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $68,448 USD at MOH London · As of November 7, 2026
View at MOH London

About this 3.51ct natural cushion diamond

This 3.51ct natural cushion sits in the three to five carat band, graded E 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 6422655354. Listed at 7 retailers as of November 7, 2026, with prices from $44,078 to $68,448, a $24,370 spread on the same certified stone. MOH London lists it at $68,448. 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

3.51
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6422655354
Dimensions8.31 × 8.14 × 6.25 mm
L/W Ratio1.02
Top View
8.31 mm8.14 mm3.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6422655354
Side View
Table 56.0%CrownGirdle: ThickPavilionCulet: NoneDepth 76.8%

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: Nov 7
Current: $68,448 USD|Low: $40,674 USD|High: $69,646 USD|Avg: $51,698 USD|+1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 5$42,165 USD
Retailer 6$42,202 USD
Retailer 7$44,078 USD
Retailer 2$47,572 USD
Retailer 3$53,161 USD
Retailer 4$56,727 USD
MOH London$68,448 USD

45 data points across 7 retailers

7 retailers$44,078 USD to $68,448 USD

Retailer 1
-
$42,165 USD
Price last confirmed 10 days ago
Retailer 2
-
$42,202 USD
View
Price last confirmed 34 days ago
A
Retailer 3
-
$44,078 USD
View
A
Retailer 4
-
$47,572 USD
View
B+
Retailer 5
-
$53,161 USD
View
B+
Retailer 6
-
$56,727 USD
View
Most Expensive
B
MOH London
5DD8ED5D4 · Nov 7
$68,448 USD
£53,896 GBP
View
6 more retailers have this diamond
Prices start from $44,078 USDSave up to $24,370 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
3.51ct Cushion
$44,078 USD