Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2564091915

Certificate GIA 2564091915

Diamond specifications and retailer prices

From $2,123 USD
As of October 30, 2026
Save $2,791 USD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,116 USD at NZ Jewellers · As of September 20, 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 2564091915. Listed at 19 retailers as of October 27, 2026, with a 131% 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2564091915
Dimensions10.08 × 5.30 × 3.07 mm
L/W Ratio1.90
Key to symbols
Twinning Wisp, Indented Natural, Natural
Top View
10.08 mm5.30 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2564091915
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 58.0%

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: Oct 30
Current: $4,914 USD|Low: $2,029 USD|High: $5,116 USD|Avg: $2,877 USD|-3.9%
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
October 30, 2026
Retailer 15$2,123 USD
Retailer 3$2,168 USD
Retailer 7$2,256 USD
Retailer 11$2,350 USD
Retailer 12$2,350 USD
Retailer 14$2,350 USD
Retailer 5$2,459 USD
Retailer 2$2,580 USD
Retailer 13$2,712 USD
Retailer 4$2,729 USD
Retailer 8$2,749 USD
Retailer 9$2,862 USD
Retailer 6$2,953 USD
Retailer 10$4,124 USD
NZ Jewellers$4,914 USD

41 data points across 15 retailers

19 retailers$2,123 USD to $4,914 USD

A
Cheapest Retailer
-
$2,123 USD
A
Retailer 2
-
$2,168 USD
View
Final sale: no returns
A
Retailer 3
-
$2,256 USD
View
A
Retailer 4
-
$2,350 USD
View
B+
Retailer 5
-
$2,350 USD
View
A
Retailer 6
-
$2,350 USD
View
Retailer 7
-
$2,447 USD
View
Price last confirmed 41 days ago
B+
Retailer 8
-
$2,459 USD
View
B+
Retailer 9
-
$2,521 USD
A$3,878 AUD
View
B+
Retailer 10
-
$2,580 USD
£2,031 GBP
View
B+
Retailer 11
-
$2,712 USD
View
B+
Retailer 12
-
$2,729 USD
View
B+
Retailer 13
-
$2,749 USD
€2,618 EUR
View
Retailer 14
-
$2,824 USD
View
Price last confirmed 39 days ago
B+
Retailer 15
-
$2,862 USD
ZAR 46,236 ZAR
View
Retailer 16
-
$2,953 USD
A$4,543 AUD
View
Price last confirmed 25 days ago
B
Retailer 17
-
$4,124 USD
£3,247 GBP
View
B
Retailer 18
-
$4,914 USD
View
Most Expensive
NZ Jewellers
31d49e0b-4810-4c2f-a3ed-6c7ff2302b66 · Sep 20
$5,116 USD
View
Price last confirmed 42 days ago
18 more retailers have this diamond
Prices start from $2,123 USDSave up to $2,791 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.

A
1.00ct Marquise
$2,123 USD