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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2235531407

Certificate GIA 2235531407

Diamond specifications and retailer prices

From £8,195 GBP
$10,980 USD
As of October 30, 2026
Save £2,873 GBP (26%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £11,068 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two 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 2235531407. Listed at 9 retailers as of October 30, 2026, with prices from £8,195 to £11,068, a £2,873 spread on the same certified stone. Jared lists it at £11,068. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.42°
Pavilion angle38.95°
OriginNatural
Grading LabGIA
CertificateGIA 2235531407
Dimensions11.98 × 5.83 × 3.61 mm
L/W Ratio2.05
Culet sizeNone
Top View
11.98 mm5.83 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235531407
Side View
Table 57.0%Crown 37.42°Girdle: VTN-THKPavilion 38.95°Culet: NoneDepth 61.9%

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: Oct 30
Current: £11,068 GBP|Low: £8,092 GBP|High: £11,068 GBP|Avg: £9,715 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 3£8,135 GBP
Retailer 5£8,195 GBP
Retailer 8£8,903 GBP
Retailer 4£9,000 GBP
Retailer 7£10,241 GBP
Retailer 6£10,710 GBP
Retailer 9£10,710 GBP
Retailer 2£10,727 GBP
Jared£11,068 GBP

36 data points across 9 retailers

9 retailers£8,195 GBP to £11,068 GBP

B+
Cheapest Retailer
-
£8,195 GBP
$10,980 USD
B+
Retailer 2
-
£8,765 GBP
A$18,068 AUD
View
B+
Retailer 3
-
£8,903 GBP
$11,929 USD
View
B+
Retailer 4
-
£9,000 GBP
$12,059 USD
View
Final sale: no returns
B
Retailer 5
-
£10,241 GBP
$13,722 USD
View
B
Retailer 6
-
£10,710 GBP
$14,350 USD
View
B
Retailer 7
-
£10,710 GBP
$14,350 USD
View
B+
Retailer 8
-
£10,727 GBP
View
Most Expensive
B
Jared
155487273 · Oct 30
£11,068 GBP
$14,830 USD
View
8 more retailers have this diamond
Prices start from £8,195 GBPSave up to £2,873 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+
1.51ct Marquise
£8,195 GBP