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Marquise|Natural|GIA

1.03ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 6551278764

Certificate GIA 6551278764

Diamond specifications and retailer prices

From £846 GBP
As of November 6, 2026
Save £1,813 GBP (68%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £2,659 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551278764. Listed at 17 retailers as of November 5, 2026, with prices from £846 to £2,659, a £1,813 spread on the same certified stone. NZ Jewellers lists it at £2,659. 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

1.03
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551278764
Dimensions10.35 × 5.16 × 3.31 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
10.35 mm5.16 mm1.03 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551278764
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.1%

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 6
Current: £1,115 GBP|Low: £846 GBP|High: £1,920 GBP|Avg: £1,247 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£846 GBP
Retailer 7£874 GBP
Retailer 1£1,115 GBP
Retailer 9£1,138 GBP
Retailer 2£1,140 GBP
Retailer 3£1,204 GBP
Retailer 5£1,204 GBP
Retailer 10£1,438 GBP
Retailer 4£1,510 GBP
Retailer 6£1,905 GBP

29 data points across 10 retailers

17 retailers£846 GBP to £2,659 GBP

A
Cheapest Retailer
-
£846 GBP
A
Retailer 2
-
£874 GBP
View
A
Retailer 3
-
£1,010 GBP
View
B+
Retailer 4
-
£1,090 GBP
View
Retailer 5
-
£1,090 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£1,115 GBP
View
A
Retailer 7
-
£1,138 GBP
View
B+
Retailer 8
-
£1,140 GBP
View
B+
Retailer 9
-
£1,163 GBP
View
B+
Retailer 10
-
£1,204 GBP
View
A
Retailer 11
-
£1,204 GBP
View
B+
Retailer 12
-
£1,258 GBP
View
B+
Retailer 13
-
£1,438 GBP
View
B+
Retailer 14
-
£1,510 GBP
View
B+
Retailer 15
-
£1,667 GBP
View
B+
Retailer 16
-
£1,905 GBP
View
Most Expensive
B
NZ Jewellers
bd7bb135-aa6a-4cf1-ab98-94b077c77aa8 · Nov 5
£2,659 GBP
$3,579 USD
View
16 more retailers have this diamond
Prices start from £846 GBPSave up to £1,813 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
1.03ct Marquise
£846 GBP