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Marquise|Natural|GIA

1.02ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 1246037717

Certificate GIA 1246037717

Diamond specifications and retailer prices

From £2,611 GBP
As of November 4, 2026
Save £2,119 GBP (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,928 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded E 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 1246037717. Listed at 12 retailers as of November 2, 2026, with a 81% 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

1.02
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1246037717
Dimensions10.22 × 5.37 × 3.20 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle, Pinpoint
Top View
10.22 mm5.37 mm1.02 ctE / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1246037717
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.5%

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: £4,928 GBP|Low: £2,393 GBP|High: £5,352 GBP|Avg: £3,409 GBP
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
November 6, 2026
Retailer 13£2,611 GBP
Retailer 11£2,723 GBP
Retailer 2£2,744 GBP
Retailer 4£2,829 GBP
Retailer 6£2,829 GBP
Retailer 8£2,848 GBP
Retailer 5£3,033 GBP
Retailer 14£3,051 GBP
Retailer 15£3,069 GBP
Retailer 3£3,264 GBP
Retailer 12£3,306 GBP
Retailer 7£3,321 GBP
Retailer 9£3,453 GBP
Retailer 10£4,730 GBP
NZ Jewellers£4,928 GBP

25 data points across 15 retailers

12 retailers£2,611 GBP to £4,730 GBP

A
Cheapest Retailer
-
£2,611 GBP
Final sale: no returns
B+
Retailer 2
-
£2,723 GBP
View
A
Retailer 3
-
£2,744 GBP
View
Retailer 4
-
£2,829 GBP
View
Price last confirmed 33 days ago
B+
Retailer 5
-
£2,848 GBP
View
Retailer 6
-
£3,033 GBP
View
Price last confirmed 33 days ago
B+
Retailer 7
-
£3,051 GBP
View
Retailer 8
-
£3,264 GBP
View
Price last confirmed 33 days ago
Retailer 9
-
£3,306 GBP
View
Price last confirmed 9 days ago
B
Retailer 10
-
£3,453 GBP
View
B
Retailer 11
-
£4,730 GBP
View
Most Expensive
NZ Jewellers
63923f3f-e036-4e63-8bf5-3b18edc4c98f · Oct 3
£4,928 GBP
$6,633 USD
View
Price last confirmed 33 days ago
11 more retailers have this diamond
Prices start from £2,611 GBPSave up to £2,119 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.

A
1.02ct Marquise
£2,611 GBP