Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6205595976

Certificate GIA 6205595976

Diamond specifications and retailer prices

From $9,978 USD
As of November 6, 2026
Save $7,722 USD (44%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,700 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two 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 6205595976. Listed at 20 retailers as of November 4, 2026, with prices from $9,978 to $17,700, a $7,722 spread on the same certified stone. MOH London lists it at $17,700. 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

1.51
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6205595976
Dimensions7.17 × 6.84 × 4.49 mm
L/W Ratio1.05
Top View
7.17 mm6.84 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6205595976
Side View
Table 62.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $17,700 USD|Low: $9,978 USD|High: $17,960 USD|Avg: $13,084 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$9,978 USD
Retailer 7$10,075 USD
Retailer 8$11,363 USD
Retailer 4$12,097 USD
Retailer 6$12,358 USD
Retailer 2$13,153 USD
Retailer 3$13,656 USD
Retailer 5$16,579 USD
MOH London$17,700 USD

46 data points across 9 retailers

20 retailers$9,978 USD to $17,700 USD

B+
Cheapest Retailer
-
$9,978 USD
Retailer 2
-
$10,075 USD
View
Price last confirmed 16 days ago
B
Retailer 3
-
$10,542 USD
View
B
Retailer 4
-
$10,544 USD
View
B
Retailer 5
-
$10,783 USD
View
B
Retailer 6
-
$10,852 USD
View
B
Retailer 7
-
$11,205 USD
View
Retailer 8
-
$11,363 USD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$11,458 USD
View
B
Retailer 10
-
$12,097 USD
View
Retailer 11
-
$12,358 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$12,575 USD
View
B
Retailer 13
-
$13,146 USD
View
B
Retailer 14
-
$13,153 USD
View
B
Retailer 15
-
$13,220 USD
View
B
Retailer 16
-
$13,220 USD
View
B
Retailer 17
-
$13,656 USD
View
B
Retailer 18
-
$13,660 USD
View
B
Retailer 19
-
$16,579 USD
View
Most Expensive
B
MOH London
E50A38A21 · Nov 4
$17,700 USD
£13,937 GBP
View
19 more retailers have this diamond
Prices start from $9,978 USDSave up to $7,722 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.

B+
1.51ct Cushion
$9,978 USD