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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2548810416

Certificate GIA 2548810416

Diamond specifications and retailer prices

From £6,362 GBP
SGD 11,449 SGD
As of October 28, 2026
Save £5,041 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £11,403 GBP at With Clarity · As of October 29, 2026
View at With Clarity

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 2548810416. Listed at 16 retailers as of October 28, 2026, with prices from £6,362 to £11,403, a £5,041 spread on the same certified stone. With Clarity lists it at £11,403. 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 angle39.57°
Pavilion angle38.28°
OriginNatural
Grading LabGIA
CertificateGIA 2548810416
Dimensions11.35 × 6.00 × 3.75 mm
L/W Ratio1.89
Top View
11.35 mm6.00 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548810416
Side View
Table 57.0%Crown 39.57°Girdle: STK-THKPavilion 38.28°Culet: NoneDepth 62.5%

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: Oct 28
Current: £7,083 GBP|Low: £6,362 GBP|High: £11,635 GBP|Avg: £8,105 GBP|-8.1%
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
With Clarity
October 29, 2026
Retailer 10£6,362 GBP
Retailer 11£6,680 GBP
Retailer 6£6,878 GBP
Retailer 13£6,887 GBP
Retailer 9£7,001 GBP
Retailer 14£7,034 GBP
Retailer 1£7,083 GBP
Retailer 12£7,119 GBP
Retailer 8£8,127 GBP
Retailer 3£8,139 GBP
Retailer 2£8,217 GBP
Retailer 5£8,411 GBP
Retailer 7£9,379 GBP
Retailer 4£9,999 GBP
With Clarity£11,403 GBP

31 data points across 15 retailers

16 retailers£6,362 GBP to £11,403 GBP

A
Cheapest Retailer
-
£6,362 GBP
SGD 11,449 SGD
A
Retailer 2
-
£6,680 GBP
$8,895 USD
View
A
Retailer 3
-
£6,878 GBP
$9,159 USD
View
A
Retailer 4
-
£6,887 GBP
SGD 12,394 SGD
View
A
Retailer 5
-
£7,001 GBP
$9,324 USD
View
A
Retailer 6
-
£7,034 GBP
$9,367 USD
View
A
Retailer 7
-
£7,083 GBP
View
A
Retailer 8
-
£7,119 GBP
$9,480 USD
View
B+
Retailer 9
-
£8,127 GBP
€10,307 EUR
View
B+
Retailer 10
-
£8,139 GBP
$10,838 USD
View
B+
Retailer 11
-
£8,217 GBP
$10,943 USD
View
B+
Retailer 12
-
£8,411 GBP
$11,200 USD
View
B+
Retailer 13
-
£8,812 GBP
$11,735 USD
View
B+
Retailer 14
-
£9,379 GBP
$12,490 USD
View
B+
Retailer 15
-
£9,999 GBP
$13,316 USD
View
Most Expensive
B
With Clarity
2548810416 · Oct 29
£11,403 GBP
$15,185 USD
View
15 more retailers have this diamond
Prices start from £6,362 GBPSave up to £5,041 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
1.51ct Marquise
£6,362 GBP