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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 1558211257

Certificate GIA 1558211257

Diamond specifications and retailer prices

From £9,550 GBP
$12,796 USD
As of October 30, 2026
Save £5,993 GBP (39%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £15,543 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 1558211257. Listed at 13 retailers as of October 30, 2026, with prices from £9,550 to £15,543, a £5,993 spread on the same certified stone. NZ Jewellers lists it at £15,543. 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
OriginNatural
Grading LabGIA
CertificateGIA 1558211257
Dimensions11.60 × 5.94 × 3.77 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Knot, Natural
Top View
11.60 mm5.94 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558211257
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.5%

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: £13,701 GBP|Low: £7,868 GBP|High: £14,740 GBP|Avg: £10,728 GBP|+2.3%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 8£7,868 GBP
Retailer 6£9,546 GBP
Retailer 15£9,550 GBP
Retailer 9£9,780 GBP
Retailer 14£9,864 GBP
Retailer 4£9,954 GBP
Retailer 13£10,009 GBP
Retailer 7£10,103 GBP
Retailer 16£10,109 GBP
Retailer 3£10,294 GBP
Retailer 11£10,465 GBP
Retailer 17£10,980 GBP
Retailer 5£11,297 GBP
Retailer 2£11,581 GBP
Retailer 10£11,750 GBP
Retailer 1£13,701 GBP
Retailer 12£14,642 GBP

38 data points across 17 retailers

13 retailers£9,550 GBP to £15,543 GBP

B+
Cheapest Retailer
-
£9,550 GBP
$12,796 USD
B
Retailer 2
-
£9,864 GBP
$13,217 USD
View
Final sale: no returns
B+
Retailer 3
-
£9,954 GBP
$13,337 USD
View
Retailer 4
-
£10,009 GBP
A$20,633 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£10,109 GBP
$13,545 USD
View
B+
Retailer 6
-
£10,465 GBP
View
B+
Retailer 7
-
£10,980 GBP
$14,712 USD
View
B
Retailer 8
-
£11,152 GBP
$14,942 USD
View
B
Retailer 9
-
£11,581 GBP
$15,517 USD
View
B
Retailer 10
-
£11,750 GBP
€14,994 EUR
View
B
Retailer 11
-
£13,701 GBP
ZAR 296,569 ZAR
View
B
Retailer 12
-
£14,642 GBP
View
Most Expensive
B
NZ Jewellers
c4c34995-0942-4c95-a076-5438e9cfa13b · Oct 30
£15,543 GBP
$20,826 USD
View
12 more retailers have this diamond
Prices start from £9,550 GBPSave up to £5,993 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
£9,550 GBP