Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 6555372918

Certificate GIA 6555372918

Diamond specifications and retailer prices

From $2,620 USD
As of November 5, 2026
Save $3,006 USD (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,626 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555372918. Listed at 13 retailers as of November 5, 2026, with prices from $2,620 to $5,626, a $3,006 spread on the same certified stone. NZ Jewellers lists it at $5,626. 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
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle41.16°
Pavilion angle40.57°
OriginNatural
Grading LabGIA
CertificateGIA 6555372918
Dimensions10.55 × 5.49 × 3.51 mm
L/W Ratio1.92
Culet sizeNone
Top View
10.55 mm5.49 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6555372918
Side View
Table 57.0%Crown 41.16°Girdle: STK-VTKPavilion 40.57°Culet: NoneDepth 63.9%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $5,626 USD|Low: $2,097 USD|High: $5,626 USD|Avg: $2,748 USD
NZ Jewellers
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 5$2,097 USD
Retailer 6$2,278 USD
Retailer 3$2,430 USD
Retailer 10$2,620 USD
Retailer 16$2,778 USD
Retailer 12$2,822 USD
Retailer 7$2,916 USD
Retailer 13$2,925 USD
Retailer 8$2,986 USD
Retailer 11$3,215 USD
Retailer 2$3,296 USD
Retailer 14$3,305 USD
Retailer 9$3,341 USD
Retailer 4$3,633 USD
Retailer 15$4,168 USD
NZ Jewellers$5,626 USD

32 data points across 16 retailers

13 retailers$2,620 USD to $5,626 USD

Retailer 1
-
$2,278 USD
Price last confirmed 20 days ago
Retailer 2
-
$2,430 USD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$2,620 USD
View
B+
Retailer 4
-
$2,822 USD
View
B+
Retailer 5
-
$2,904 USD
View
B+
Retailer 6
-
$2,925 USD
View
B
Retailer 7
-
$3,215 USD
View
B
Retailer 8
-
$3,296 USD
View
B
Retailer 9
-
$3,305 USD
View
B
Retailer 10
-
$3,341 USD
View
Retailer 11
-
$3,633 USD
View
Price last confirmed 18 days ago
B
Retailer 12
-
$4,168 USD
View
Most Expensive
C
NZ Jewellers
bb823756-70fd-443a-9a0a-294775cc99d0 · Nov 5
$5,626 USD
View
12 more retailers have this diamond
Prices start from $2,620 USDSave up to $3,006 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+
1.21ct Marquise
$2,620 USD