Cushion|Natural|GIA

1.21ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6555416527

Certificate GIA 6555416527

Diamond specifications and retailer prices

From $1,817 USD
As of November 6, 2026
Save $2,388 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,205 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555416527. Listed at 18 retailers as of November 4, 2026, with prices from $1,817 to $4,205, a $2,388 spread on the same certified stone. MOH London lists it at $4,205. 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

1.21
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555416527
Dimensions6.21 × 6.14 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.21 mm6.14 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555416527
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.6%

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 6
Current: $4,205 USD|Low: $1,792 USD|High: $4,290 USD|Avg: $2,471 USD|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 6$1,817 USD
Retailer 2$1,838 USD
Retailer 15$1,994 USD
Retailer 8$2,011 USD
Retailer 9$2,126 USD
Retailer 14$2,145 USD
Retailer 3$2,195 USD
Retailer 4$2,250 USD
Retailer 13$2,279 USD
Retailer 7$2,285 USD
Retailer 11$2,322 USD
Retailer 5$2,472 USD
Retailer 12$2,937 USD
Retailer 10$2,987 USD
Retailer 16$3,713 USD
MOH London$4,205 USD

23 data points across 16 retailers

18 retailers$1,817 USD to $4,205 USD

A
Cheapest Retailer
-
$1,817 USD
A
Retailer 2
-
$1,838 USD
View
A
Retailer 3
-
$1,994 USD
View
A
Retailer 4
-
$2,011 USD
View
Final sale: no returns
A
Retailer 5
-
$2,126 USD
View
A
Retailer 6
-
$2,145 USD
View
A
Retailer 7
-
$2,195 USD
View
A
Retailer 8
-
$2,250 USD
View
A
Retailer 9
-
$2,279 USD
View
A
Retailer 10
-
$2,285 USD
View
A
Retailer 11
-
$2,322 USD
View
B+
Retailer 12
-
$2,472 USD
View
B+
Retailer 13
-
$2,540 USD
View
B+
Retailer 14
-
$2,937 USD
View
B+
Retailer 15
-
$2,987 USD
View
Retailer 16
-
$3,003 USD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$3,713 USD
View
Most Expensive
B
MOH London
948ED028E · Nov 4
$4,205 USD
£3,311 GBP
View
17 more retailers have this diamond
Prices start from $1,817 USDSave up to $2,388 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
1.21ct Cushion
$1,817 USD