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Marquise|Natural|GIA

0.90ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6551992390

Certificate GIA 6551992390

Diamond specifications and retailer prices

From $1,636 SGD
HK$10,000 HKD
As of November 1, 2026
Save $2,184 SGD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,318 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 0.9ct natural marquise diamond

This 0.9ct natural marquise sits in the just-under-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 6551992390. Listed at 19 retailers as of November 1, 2026, with a 133% 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

0.90
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551992390
Dimensions9.74 × 5.07 × 3.12 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
9.74 mm5.07 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551992390
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.6%

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 1
Current: $2,423 SGD|Low: $1,636 SGD|High: $3,882 SGD|Avg: $2,585 SGD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$1,636 SGD
Retailer 4$1,704 SGD
Retailer 10$2,011 SGD
Retailer 9$2,023 SGD
Retailer 2$2,272 SGD
Retailer 11$2,355 SGD
Retailer 1$2,423 SGD
Retailer 3$2,857 SGD
Retailer 8$2,977 SGD
Retailer 7$3,216 SGD
Retailer 5$3,820 SGD

34 data points across 11 retailers

19 retailers$1,636 SGD to $3,820 SGD

A
Cheapest Retailer
-
$1,636 SGD
HK$10,000 HKD
A
Retailer 2
-
$1,704 SGD
₹126,964 INR
View
B+
Retailer 3
-
$2,011 SGD
$1,573 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,023 SGD
View
B+
Retailer 5
-
$2,061 SGD
$1,612 USD
View
B+
Retailer 6
-
$2,065 SGD
$1,615 USD
View
B+
Retailer 7
-
$2,097 SGD
$1,640 USD
View
Retailer 8
-
$2,180 SGD
$1,705 USD
View
Price last confirmed 15 days ago
Retailer 9
-
$2,180 SGD
$1,705 USD
View
Price last confirmed 17 days ago
B
Retailer 10
-
$2,272 SGD
View
Retailer 11
-
$2,281 SGD
$1,784 USD
View
Price last confirmed 16 days ago
B+
Retailer 12
-
$2,355 SGD
$1,842 USD
View
B+
Retailer 13
-
$2,423 SGD
£1,492 GBP
View
Retailer 14
-
$2,516 SGD
$1,968 USD
View
Price last confirmed 14 days ago
Retailer 15
-
$2,857 SGD
A$3,438 AUD
View
Price last confirmed 27 days ago
B
Retailer 16
-
$2,977 SGD
€2,218 EUR
View
B
Retailer 17
-
$3,216 SGD
ZAR 40,636 ZAR
View
B
Retailer 18
-
$3,820 SGD
£2,353 GBP
View
Most Expensive
NZ Jewellers
5e747eff-1b15-4ef9-ac3c-25cc03d9706c · Oct 17
$5,318 SGD
$4,160 USD
View
Price last confirmed 15 days ago
18 more retailers have this diamond
Prices start from $1,636 SGDSave up to $2,184 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.

A
0.90ct Marquise
$1,636 SGD