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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2556641575

Certificate GIA 2556641575

Diamond specifications and retailer prices

From $2,184 SGD
As of October 31, 2026
Save $2,051 SGD (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,235 SGD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I 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 2556641575. Listed at 13 retailers as of October 27, 2026, with prices from $2,184 to $4,235, a $2,051 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,235. 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.94°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 2556641575
Dimensions9.80 × 5.19 × 3.33 mm
L/W Ratio1.89
Culet sizeNone
Top View
9.80 mm5.19 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556641575
Side View
Table 58.0%Crown 39.94°Girdle: STK-THKPavilion 40.11°Culet: NoneDepth 64.3%

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: Oct 31
Current: $3,644 SGD|Low: $2,184 SGD|High: $4,319 SGD|Avg: $3,152 SGD|+7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$2,184 SGD
Retailer 8$2,565 SGD
Retailer 7$2,587 SGD
Retailer 6$2,610 SGD
Retailer 3$2,816 SGD
Retailer 4$2,832 SGD
Retailer 11$3,073 SGD
Retailer 5$3,246 SGD
Retailer 2$3,274 SGD
Retailer 1$3,644 SGD
Retailer 9$3,944 SGD
Wholesale Diamonds Direct$4,235 SGD

37 data points across 12 retailers

13 retailers$2,184 SGD to $4,235 SGD

A
Cheapest Retailer
-
$2,184 SGD
A
Retailer 2
-
$2,565 SGD
$2,006 USD
View
A
Retailer 3
-
$2,587 SGD
$2,023 USD
View
A
Retailer 4
-
$2,610 SGD
$2,041 USD
View
A
Retailer 5
-
$2,816 SGD
View
A
Retailer 6
-
$2,832 SGD
£1,744 GBP
View
A
Retailer 7
-
$3,073 SGD
$2,403 USD
View
A
Retailer 8
-
$3,246 SGD
$2,538 USD
View
B+
Retailer 9
-
$3,250 SGD
$2,541 USD
View
B+
Retailer 10
-
$3,274 SGD
$2,560 USD
View
B+
Retailer 11
-
$3,644 SGD
€2,714 EUR
View
B+
Retailer 12
-
$3,944 SGD
$3,084 USD
View
Most Expensive
B
Wholesale Diamonds Direct
610445789 · Oct 27
$4,235 SGD
$3,312 USD
View
12 more retailers have this diamond
Prices start from $2,184 SGDSave up to $2,051 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
1.00ct Marquise
$2,184 SGD