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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6551490092

Certificate GIA 6551490092

Diamond specifications and retailer prices

From $2,457 USD
As of November 6, 2026
Save $3,004 USD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,461 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-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 6551490092. Listed at 16 retailers as of November 2, 2026, with prices from $2,457 to $5,461, a $3,004 spread on the same certified stone. MOH London lists it at $5,461. 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

1.20
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551490092
Dimensions7.11 × 5.31 × 3.59 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.11 mm5.31 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551490092
Side View
Table 68.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.7%

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: Nov 6
Current: $5,461 USD|Low: $2,444 USD|High: $5,698 USD|Avg: $3,522 USD|-3.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$2,457 USD
Retailer 2$2,571 USD
Retailer 3$2,944 USD
Retailer 9$2,960 USD
Retailer 11$3,014 USD
Retailer 7$3,359 USD
Retailer 6$3,422 USD
Retailer 12$3,500 USD
Retailer 4$3,596 USD
Retailer 5$3,802 USD
Retailer 8$3,986 USD
MOH London$5,461 USD

31 data points across 12 retailers

16 retailers$2,457 USD to $5,461 USD

A
Cheapest Retailer
-
$2,457 USD
A
Retailer 2
-
$2,571 USD
View
B+
Retailer 3
-
$2,944 USD
View
B+
Retailer 4
-
$2,960 USD
View
B+
Retailer 5
-
$3,014 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,114 USD
View
B+
Retailer 7
-
$3,115 USD
View
B+
Retailer 8
-
$3,326 USD
View
B+
Retailer 9
-
$3,359 USD
View
Retailer 10
-
$3,367 USD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
$3,422 USD
View
B+
Retailer 12
-
$3,500 USD
View
Retailer 13
-
$3,596 USD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
$3,802 USD
View
B+
Retailer 15
-
$3,986 USD
View
Most Expensive
B
MOH London
DDFA2EE84 · Nov 2
$5,461 USD
£4,300 GBP
View
15 more retailers have this diamond
Prices start from $2,457 USDSave up to $3,004 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
1.20ct Cushion
$2,457 USD