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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541818171

Certificate GIA 6541818171

Diamond specifications and retailer prices

From $3,801 SGD
$2,972 USD
As of November 2, 2026
Save $4,022 SGD (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,823 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 6541818171. Listed at 16 retailers as of October 30, 2026, with prices from $3,801 to $7,823, a $4,022 spread on the same certified stone. NZ Jewellers lists it at $7,823. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541818171
Dimensions9.77 × 5.26 × 3.19 mm
L/W Ratio1.86
Top View
9.77 mm5.26 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541818171
Side View
Table 60.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 60.6%

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 2
Current: $7,823 SGD|Low: $3,787 SGD|High: $7,823 SGD|Avg: $4,944 SGD
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
November 2, 2026
Retailer 7$3,801 SGD
Retailer 12$4,068 SGD
Retailer 15$4,068 SGD
Retailer 14$4,224 SGD
Retailer 6$4,375 SGD
Retailer 4$4,617 SGD
Retailer 5$4,617 SGD
Retailer 9$4,654 SGD
Retailer 13$4,694 SGD
Retailer 3$4,770 SGD
Retailer 16$4,814 SGD
Retailer 2$4,944 SGD
Retailer 8$5,087 SGD
Retailer 11$5,519 SGD
Retailer 10$7,509 SGD
NZ Jewellers$7,823 SGD

43 data points across 16 retailers

16 retailers$3,801 SGD to $7,823 SGD

B+
Cheapest Retailer
-
$3,801 SGD
$2,972 USD
B+
Retailer 2
-
$4,068 SGD
$3,181 USD
View
B+
Retailer 3
-
$4,068 SGD
$3,181 USD
View
B+
Retailer 4
-
$4,224 SGD
$3,303 USD
View
B
Retailer 5
-
$4,375 SGD
$3,421 USD
View
B+
Retailer 6
-
$4,617 SGD
$3,610 USD
View
B+
Retailer 7
-
$4,617 SGD
$3,610 USD
View
B+
Retailer 8
-
$4,654 SGD
£2,865 GBP
View
B
Retailer 9
-
$4,694 SGD
$3,670 USD
View
B
Retailer 10
-
$4,770 SGD
$3,730 USD
View
Retailer 11
-
$4,814 SGD
A$5,792 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$4,944 SGD
€3,682 EUR
View
Retailer 13
-
$5,087 SGD
$3,978 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$5,519 SGD
ZAR 69,719 ZAR
View
B
Retailer 15
-
$7,509 SGD
£4,623 GBP
View
Most Expensive
B
NZ Jewellers
8949f649-d9ed-47ef-bd18-7dc83a964ae4 · Oct 30
$7,823 SGD
$6,117 USD
View
15 more retailers have this diamond
Prices start from $3,801 SGDSave up to $4,022 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+
1.00ct Marquise
$3,801 SGD