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Marquise|Natural|GIA

1.00ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 6551141394

Certificate GIA 6551141394

Diamond specifications and retailer prices

From $3,408 SGD
As of November 5, 2026
Save $538 SGD (14%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,084 SGD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551141394. Listed at 18 retailers as of November 5, 2026, with a relatively tight 16% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551141394
Dimensions11.42 × 5.02 × 2.87 mm
L/W Ratio2.27
Top View
11.42 mm5.02 mm1.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551141394
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 57.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,408 SGD|Low: $2,886 SGD|High: $6,684 SGD|Avg: $4,183 SGD|+0.2%
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
November 5, 2026
Retailer 14$2,886 SGD
Retailer 9$3,040 SGD
Retailer 1$3,408 SGD
Retailer 12$3,544 SGD
Retailer 13$3,568 SGD
Retailer 4$3,618 SGD
Retailer 5$3,946 SGD
Retailer 6$3,997 SGD
Retailer 2$4,049 SGD
Retailer 3$4,049 SGD
Retailer 8$4,054 SGD
Retailer 10$4,492 SGD
Retailer 11$6,500 SGD
Retailer 7$6,599 SGD

32 data points across 14 retailers

18 retailers$3,408 SGD to $3,946 SGD

Retailer 1
-
$2,886 SGD
Price last confirmed 15 days ago
Retailer 2
-
$3,040 SGD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$3,408 SGD
View
B+
Retailer 4
-
$3,618 SGD
View
Retailer 5
-
$3,867 SGD
View
Price last confirmed 21 days ago
Retailer 6
-
$3,867 SGD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$3,946 SGD
View
Retailer 8
-
$3,997 SGD
View
Price last confirmed 45 days ago
Retailer 9
-
$4,015 SGD
View
Price last confirmed 21 days ago
Retailer 10
-
$4,049 SGD
View
Price last confirmed 19 days ago
Retailer 11
-
$4,049 SGD
View
Price last confirmed 16 days ago
Retailer 12
-
$4,054 SGD
View
Price last confirmed 16 days ago
Retailer 13
-
$4,461 SGD
View
Price last confirmed 18 days ago
Retailer 14
-
$4,612 SGD
View
Price last confirmed 45 days ago
Retailer 15
-
$6,500 SGD
View
Price last confirmed 16 days ago
Retailer 16
-
$6,599 SGD
View
Price last confirmed 15 days ago
Retailer 17
-
$6,964 SGD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
acc5bc18-4dfb-4497-ac9f-97afada2c82f · Oct 17
$8,084 SGD
$6,308 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from $3,408 SGDSave up to $538 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
$3,408 SGD