Marquise|Natural|GIA

1.00ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2566197388

Certificate GIA 2566197388

Diamond specifications and retailer prices

From £2,624 GBP
As of October 30, 2026
22 retailers carry this diamond
Most expensive: £5,195 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566197388. Listed at 22 retailers as of October 30, 2026. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2566197388
Dimensions9.92 × 5.23 × 3.22 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Pinpoint, Indented Natural
Top View
9.92 mm5.23 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2566197388
Side View
Table 62.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 61.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £2,917 GBP|Low: £2,237 GBP|High: £5,047 GBP|Avg: £3,176 GBP|-0.7%
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
October 30, 2026
Retailer 12£2,250 GBP
Retailer 4£2,371 GBP
Retailer 1£2,917 GBP
Retailer 7£2,982 GBP
Retailer 8£2,982 GBP
Retailer 9£2,982 GBP
Retailer 6£3,050 GBP
Retailer 3£3,063 GBP
Retailer 2£3,165 GBP
Retailer 5£3,197 GBP
Retailer 11£3,286 GBP
Retailer 13£3,631 GBP
Retailer 10£5,013 GBP

32 data points across 13 retailers

22 retailers

Retailer 1
-
£2,250 GBP
Price last confirmed 9 days ago
Retailer 2
-
£2,479 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£2,546 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£2,547 GBP
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£2,624 GBP
View
Retailer 6
-
£2,769 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£2,843 GBP
View
Price last confirmed 6 days ago
Retailer 8
-
£2,917 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
£2,982 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£2,982 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
£2,982 GBP
View
Price last confirmed 8 days ago
Retailer 12
-
£3,050 GBP
View
Price last confirmed 7 days ago
Retailer 13
-
£3,063 GBP
View
Price last confirmed 9 days ago
Retailer 14
-
£3,165 GBP
View
Price last confirmed 10 days ago
Retailer 15
-
£3,189 GBP
View
Price last confirmed 8 days ago
Retailer 16
-
£3,197 GBP
View
Price last confirmed 33 days ago
Retailer 17
-
£3,205 GBP
View
Price last confirmed 9 days ago
Retailer 18
-
£3,286 GBP
View
Price last confirmed 9 days ago
Retailer 19
-
£3,441 GBP
View
Price last confirmed 10 days ago
Retailer 20
-
£3,631 GBP
View
Price last confirmed 10 days ago
Retailer 21
-
£5,013 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
85a7971b-969f-4bd5-a1f7-c9e4f9b75bfa · Oct 27
£5,195 GBP
$6,954 USD
View
Price last confirmed 10 days ago
21 more retailers have this diamond
Prices start from £2,624 GBP

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
£2,624 GBP