Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6541818171

Certificate GIA 6541818171

Diamond specifications and retailer prices

From $2,972 USD
As of November 2, 2026
Save $3,145 USD (51%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,117 USD 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 $2,972 to $6,117, a $3,145 spread on the same certified stone. NZ Jewellers lists it at $6,117. 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
Color
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: $6,117 USD|Low: $2,961 USD|High: $6,117 USD|Avg: $3,865 USD
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$2,972 USD
Retailer 12$3,181 USD
Retailer 15$3,181 USD
Retailer 14$3,303 USD
Retailer 6$3,421 USD
Retailer 4$3,610 USD
Retailer 5$3,610 USD
Retailer 9$3,639 USD
Retailer 13$3,670 USD
Retailer 3$3,730 USD
Retailer 16$3,765 USD
Retailer 2$3,866 USD
Retailer 8$3,978 USD
Retailer 11$4,316 USD
Retailer 10$5,871 USD
NZ Jewellers$6,117 USD

43 data points across 16 retailers

16 retailers$2,972 USD to $6,117 USD

B+
Cheapest Retailer
-
$2,972 USD
B+
Retailer 2
-
$3,181 USD
View
B+
Retailer 3
-
$3,181 USD
View
B+
Retailer 4
-
$3,303 USD
View
B
Retailer 5
-
$3,421 USD
View
B+
Retailer 6
-
$3,610 USD
View
B+
Retailer 7
-
$3,610 USD
View
B+
Retailer 8
-
$3,639 USD
£2,865 GBP
View
B
Retailer 9
-
$3,670 USD
View
B
Retailer 10
-
$3,730 USD
View
Retailer 11
-
$3,765 USD
A$5,792 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$3,866 USD
€3,682 EUR
View
Retailer 13
-
$3,978 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$4,316 USD
ZAR 69,719 ZAR
View
B
Retailer 15
-
$5,871 USD
£4,623 GBP
View
Most Expensive
B
NZ Jewellers
8949f649-d9ed-47ef-bd18-7dc83a964ae4 · Oct 30
$6,117 USD
View
15 more retailers have this diamond
Prices start from $2,972 USDSave up to $3,145 USD

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
$2,972 USD