Marquise|Natural|GIA

1.20ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2557721221

Certificate GIA 2557721221

Diamond specifications and retailer prices

From $2,176 USD
As of November 6, 2026
Save $2,639 USD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,414 USD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct 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 2557721221. Listed at 15 retailers as of November 4, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557721221
Dimensions10.19 × 5.54 × 3.46 mm
L/W Ratio1.84
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural, Needle, Knot, Natural, Extra Facet
Top View
10.19 mm5.54 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557721221
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: Very SmallDepth 62.4%

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: $2,251 USD|Low: $2,150 USD|High: $5,147 USD|Avg: $3,046 USD|-7.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$2,176 USD
Retailer 1$2,251 USD
Retailer 2$2,665 USD
Retailer 6$2,671 USD
Retailer 3$2,836 USD
Retailer 11$3,022 USD
Retailer 9$3,029 USD
Retailer 5$3,056 USD
Retailer 10$3,140 USD
Retailer 4$3,361 USD
Retailer 7$4,815 USD

34 data points across 11 retailers

15 retailers$2,176 USD to $4,815 USD

A
Cheapest Retailer
-
$2,176 USD
A
Retailer 2
-
$2,251 USD
View
B+
Retailer 3
-
$2,665 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,671 USD
View
B+
Retailer 5
-
$2,836 USD
View
B+
Retailer 6
-
$3,022 USD
View
B+
Retailer 7
-
$3,029 USD
View
Retailer 8
-
$3,041 USD
View
Price last confirmed 25 days ago
B+
Retailer 9
-
$3,056 USD
View
Retailer 10
-
$3,107 USD
View
Price last confirmed 41 days ago
B
Retailer 11
-
$3,140 USD
View
B+
Retailer 12
-
$3,361 USD
View
Retailer 13
-
$3,586 USD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$4,815 USD
View
Most Expensive
NZ Jewellers
b32b4b42-4344-4635-bb13-caf0ed669bc1 · Sep 28
$5,414 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from $2,176 USDSave up to $2,639 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 Marquise
$2,176 USD