CaratHunter
Plans
Marquise|Natural|GIA

1.00ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6555978887

Certificate GIA 6555978887

Diamond specifications and retailer prices

From $2,910 SGD
As of November 4, 2026
Save $3,550 SGD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,075 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555978887. Listed at 19 retailers as of November 2, 2026, with a 122% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555978887
Dimensions9.79 × 5.29 × 3.29 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Natural
Top View
9.79 mm5.29 mm1.00 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555978887
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.2%

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 4
Current: $3,407 SGD|Low: $2,876 SGD|High: $6,634 SGD|Avg: $4,269 SGD|-0.1%
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
November 5, 2026
Retailer 10$2,910 SGD
Retailer 7$3,044 SGD
Retailer 1$3,407 SGD
Retailer 2$3,453 SGD
Retailer 3$3,565 SGD
Retailer 4$4,044 SGD
Retailer 5$4,045 SGD
Retailer 6$4,095 SGD
Retailer 13$4,448 SGD
Retailer 11$4,520 SGD
Retailer 9$4,748 SGD
Retailer 8$6,459 SGD
Retailer 12$6,610 SGD

28 data points across 13 retailers

19 retailers$2,910 SGD to $6,459 SGD

A
Cheapest Retailer
-
$2,910 SGD
A
Retailer 2
-
$3,044 SGD
View
B+
Retailer 3
-
$3,407 SGD
View
Retailer 4
-
$3,453 SGD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$3,616 SGD
View
B+
Retailer 6
-
$3,621 SGD
View
Retailer 7
-
$3,863 SGD
View
Price last confirmed 20 days ago
Retailer 8
-
$3,863 SGD
View
Price last confirmed 18 days ago
Retailer 9
-
$4,011 SGD
View
Price last confirmed 20 days ago
B+
Retailer 10
-
$4,044 SGD
View
Retailer 11
-
$4,045 SGD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$4,095 SGD
View
Retailer 13
-
$4,144 SGD
View
Price last confirmed 29 days ago
Retailer 14
-
$4,456 SGD
View
Price last confirmed 17 days ago
B
Retailer 15
-
$4,520 SGD
View
B+
Retailer 16
-
$4,748 SGD
View
B
Retailer 17
-
$6,459 SGD
View
Retailer 18
-
$6,610 SGD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
6cdd9434-35a4-44a2-ba4e-55c626e8c816 · Oct 17
$8,075 SGD
$6,322 USD
View
Price last confirmed 18 days ago
18 more retailers have this diamond
Prices start from $2,910 SGDSave up to $3,550 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
$2,910 SGD