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Marquise|Natural|GIA

0.70ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2558170819

Certificate GIA 2558170819

Diamond specifications and retailer prices

From £838 GBP
As of November 6, 2026
Save £997 GBP (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,444 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.7ct natural marquise diamond

This 0.7ct natural marquise sits in the half to three-quarter 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 2558170819. Listed at 25 retailers as of November 1, 2026, with a 119% 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

0.70
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558170819
Dimensions8.48 × 4.64 × 2.95 mm
L/W Ratio1.83
Culet sizeNone
Top View
8.48 mm4.64 mm0.70 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558170819
Side View
Table 60.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 63.7%

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 6
Current: £2,444 GBP|Low: £767 GBP|High: £2,444 GBP|Avg: £1,207 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
Retailer 16
Retailer 17
November 6, 2026
Retailer 7£838 GBP
Retailer 8£870 GBP
Retailer 6£870 GBP
Retailer 2£903 GBP
Retailer 15£908 GBP
Retailer 16£908 GBP
Retailer 3£943 GBP
Retailer 5£972 GBP
Retailer 17£1,047 GBP
Retailer 12£1,127 GBP
Retailer 10£1,256 GBP
Retailer 9£1,307 GBP
Retailer 4£1,372 GBP
Retailer 11£1,389 GBP
Retailer 13£1,496 GBP
Retailer 14£1,835 GBP
NZ Jewellers£2,444 GBP

33 data points across 17 retailers

25 retailers£838 GBP to £1,835 GBP

B+
Cheapest Retailer
-
£838 GBP
Final sale: no returns
B+
Retailer 2
-
£855 GBP
View
B
Retailer 3
-
£870 GBP
View
B+
Retailer 4
-
£870 GBP
View
B
Retailer 5
-
£903 GBP
View
B
Retailer 6
-
£908 GBP
View
Retailer 7
-
£908 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£943 GBP
View
B
Retailer 9
-
£972 GBP
View
B
Retailer 10
-
£974 GBP
View
B
Retailer 11
-
£981 GBP
View
B
Retailer 12
-
£1,046 GBP
View
B
Retailer 13
-
£1,046 GBP
View
B
Retailer 14
-
£1,047 GBP
View
Retailer 15
-
£1,047 GBP
View
Price last confirmed 16 days ago
B
Retailer 16
-
£1,083 GBP
View
B
Retailer 17
-
£1,127 GBP
View
B
Retailer 18
-
£1,256 GBP
View
B
Retailer 19
-
£1,263 GBP
View
Retailer 20
-
£1,307 GBP
View
Price last confirmed 32 days ago
B
Retailer 21
-
£1,372 GBP
View
B
Retailer 22
-
£1,389 GBP
View
B
Retailer 23
-
£1,496 GBP
View
B
Retailer 24
-
£1,835 GBP
View
Most Expensive
NZ Jewellers
1e14960f-7ff0-4afa-acfc-2c24aea67251 · Nov 5
£2,444 GBP
$3,271 USD
View
Price under review
24 more retailers have this diamond
Prices start from £838 GBPSave up to £997 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+
0.70ct Marquise
£838 GBP