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Marquise|Natural|GIA

1.00ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1375003103

Certificate GIA 1375003103

Diamond specifications and retailer prices

From $2,808 SGD
As of November 6, 2026
Save $4,605 SGD (62%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,413 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1375003103. Listed at 19 retailers as of November 5, 2026, with prices from $2,808 to $7,413, a $4,605 spread on the same certified stone. NZ Jewellers lists it at $7,413. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1375003103
Dimensions10.03 × 5.08 × 3.32 mm
L/W Ratio1.97
Culet sizeNone
Top View
10.03 mm5.08 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1375003103
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.3%

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 6
Current: $3,731 SGD|Low: $2,808 SGD|High: $6,288 SGD|Avg: $3,937 SGD|+2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$2,808 SGD
Retailer 5$3,185 SGD
Retailer 6$3,360 SGD
Retailer 8$3,706 SGD
Retailer 1$3,731 SGD
Retailer 4$4,134 SGD
Retailer 2$4,328 SGD
Retailer 3$6,195 SGD

43 data points across 8 retailers

19 retailers$2,808 SGD to $7,413 SGD

B+
Cheapest Retailer
-
$2,808 SGD
B+
Retailer 2
-
$2,887 SGD
View
B+
Retailer 3
-
$2,902 SGD
View
B+
Retailer 4
-
$3,030 SGD
View
B+
Retailer 5
-
$3,099 SGD
View
B
Retailer 6
-
$3,185 SGD
View
Retailer 7
-
$3,213 SGD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$3,213 SGD
View
B
Retailer 9
-
$3,267 SGD
View
B
Retailer 10
-
$3,360 SGD
View
B
Retailer 11
-
$3,482 SGD
View
B
Retailer 12
-
$3,482 SGD
View
B
Retailer 13
-
$3,706 SGD
View
B+
Retailer 14
-
$3,731 SGD
View
B
Retailer 15
-
$4,134 SGD
View
B
Retailer 16
-
$4,328 SGD
View
B
Retailer 17
-
$5,107 SGD
View
B
Retailer 18
-
$6,195 SGD
View
Most Expensive
C
NZ Jewellers
d25ecab8-ce6f-41c4-a648-317ad859a575 · Nov 5
$7,413 SGD
$5,784 USD
View
18 more retailers have this diamond
Prices start from $2,808 SGDSave up to $4,605 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
$2,808 SGD