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Marquise|Natural|GIA

1.01ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 1232918661

Certificate GIA 1232918661

Diamond specifications and retailer prices

From $2,840 SGD
As of November 4, 2026
Save $3,372 SGD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $7,787 SGD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct 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 1232918661. Listed at 20 retailers as of November 4, 2026, with a 119% 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

1.01
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232918661
Dimensions9.71 × 5.36 × 3.42 mm
L/W Ratio1.81
Culet sizeNone
Key to symbols
Knot, Twinning Wisp, Feather
Top View
9.71 mm5.36 mm1.01 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232918661
Side View
Table 59.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.8%

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 4
Current: $3,942 SGD|Low: $2,840 SGD|High: $6,303 SGD|Avg: $3,884 SGD|+1.1%
Retailer 1
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
November 5, 2026
Retailer 3$2,840 SGD
Retailer 7$3,022 SGD
Retailer 12$3,114 SGD
Retailer 4$3,332 SGD
Retailer 2$3,374 SGD
Retailer 15$3,374 SGD
Retailer 9$3,626 SGD
Retailer 14$3,894 SGD
Retailer 1$3,942 SGD
Retailer 13$4,173 SGD
Retailer 6$4,232 SGD
Retailer 5$4,325 SGD
Retailer 10$4,357 SGD
Retailer 11$4,578 SGD
Retailer 8$6,212 SGD

25 data points across 15 retailers

20 retailers$2,840 SGD to $6,212 SGD

B+
Cheapest Retailer
-
$2,840 SGD
B+
Retailer 2
-
$3,022 SGD
View
B+
Retailer 3
-
$3,114 SGD
View
Final sale: no returns
B+
Retailer 4
-
$3,332 SGD
View
Retailer 5
-
$3,374 SGD
View
Price last confirmed 47 days ago
Retailer 6
-
$3,374 SGD
View
Price last confirmed 30 days ago
Retailer 7
-
$3,374 SGD
View
Price last confirmed 26 days ago
Retailer 8
-
$3,504 SGD
View
Price last confirmed 37 days ago
B+
Retailer 9
-
$3,626 SGD
View
Retailer 10
-
$3,894 SGD
View
Price last confirmed 46 days ago
Retailer 11
-
$3,894 SGD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$3,942 SGD
View
Retailer 13
-
$4,173 SGD
View
Price last confirmed 31 days ago
B
Retailer 14
-
$4,232 SGD
View
Retailer 15
-
$4,325 SGD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$4,357 SGD
View
B
Retailer 17
-
$4,578 SGD
View
B
Retailer 18
-
$6,212 SGD
View
Retailer 19
-
$7,787 SGD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
06c6b98c-7f62-42fb-8a70-5b8074bd83a6 · Oct 3
$7,787 SGD
$6,076 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from $2,840 SGDSave up to $3,372 SGD

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+
1.01ct Marquise
$2,840 SGD