CaratHunter
Plans
Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2556611130

Certificate GIA 2556611130

Diamond specifications and retailer prices

From $3,676 USD
As of October 30, 2026
Save $4,357 USD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $8,033 USD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556611130. Listed at 21 retailers as of October 30, 2026, with prices from $3,676 to $8,033, a $4,357 spread on the same certified stone. NZ Jewellers lists it at $8,033. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556611130
Dimensions10.54 × 5.57 × 3.52 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural
Top View
10.54 mm5.57 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556611130
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.3%

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: Oct 30
Current: $8,033 USD|Low: $2,833 USD|High: $8,033 USD|Avg: $4,216 USD|+17.1%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
October 30, 2026
Retailer 20$2,833 USD
Retailer 16$2,987 USD
Retailer 22$3,676 USD
Retailer 2$3,733 USD
Retailer 28$3,923 USD
Retailer 5$3,970 USD
Retailer 15$4,155 USD
Retailer 23$4,160 USD
Retailer 4$4,177 USD
Retailer 6$4,177 USD
Retailer 10$4,177 USD
Retailer 21$4,190 USD
Retailer 24$4,222 USD
Retailer 14$4,237 USD
Retailer 7$4,382 USD
Retailer 8$4,433 USD
Retailer 26$4,511 USD
Retailer 19$4,525 USD
Retailer 27$4,585 USD
Retailer 11$4,710 USD
Retailer 13$4,710 USD
Retailer 17$4,717 USD
Retailer 3$4,817 USD
Retailer 25$4,860 USD
Retailer 12$4,869 USD
Retailer 9$5,214 USD
Retailer 18$6,628 USD
NZ Jewellers$8,033 USD

14 data points across 28 retailers

21 retailers$3,676 USD to $8,033 USD

B+
Cheapest Retailer
-
$3,676 USD
B
Retailer 2
-
$3,733 USD
View
B
Retailer 3
-
$3,923 USD
View
B
Retailer 4
-
$3,970 USD
View
Retailer 5
-
$4,155 USD
A$6,392 AUD
View
Price last confirmed 35 days ago
B
Retailer 6
-
$4,160 USD
View
B
Retailer 7
-
$4,177 USD
View
B
Retailer 8
-
$4,177 USD
View
B
Retailer 9
-
$4,222 USD
CA$5,863 CAD
View
B
Retailer 10
-
$4,382 USD
View
B
Retailer 11
-
$4,433 USD
View
B
Retailer 12
-
$4,511 USD
£3,552 GBP
View
Retailer 13
-
$4,525 USD
View
Price last confirmed 38 days ago
B
Retailer 14
-
$4,585 USD
£3,610 GBP
View
B
Retailer 15
-
$4,693 USD
View
B
Retailer 16
-
$4,710 USD
View
B
Retailer 17
-
$4,710 USD
View
B
Retailer 18
-
$4,817 USD
View
B
Retailer 19
-
$4,860 USD
View
B
Retailer 20
-
$4,869 USD
View
Most Expensive
B
NZ Jewellers
37847300-0b2d-4569-b8cc-9f53c7a5744a · Oct 30
$8,033 USD
View
20 more retailers have this diamond
Prices start from $3,676 USDSave up to $4,357 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+
1.20ct Marquise
$3,676 USD