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Marquise|Natural|GIA

1.51ct L SI1 Marquise Natural Diamond

EX • L/SI1 • GIA 3545615128

Certificate GIA 3545615128

Diamond specifications and retailer prices

From £2,515 GBP
As of November 6, 2026
Save £1,268 GBP (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,783 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545615128. Listed at 4 retailers as of November 6, 2026, with prices from £2,515 to £3,783, a £1,268 spread on the same certified stone. 77 Diamonds lists it at £3,783. 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
L
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3545615128
Dimensions11.37 × 5.98 × 3.78 mm
L/W Ratio1.90
Top View
11.37 mm5.98 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3545615128
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,783 GBP|Low: £2,403 GBP|High: £5,963 GBP|Avg: £3,580 GBP|+0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£2,403 GBP
Retailer 2£2,515 GBP
Retailer 4£2,913 GBP
Retailer 3£3,141 GBP
Retailer 8£3,292 GBP
77 Diamonds£3,783 GBP
Retailer 6£4,606 GBP
Retailer 7£5,963 GBP

35 data points across 8 retailers

4 retailers£2,515 GBP to £3,783 GBP

B+
Cheapest Retailer
-
£2,515 GBP
B
Retailer 2
-
£2,913 GBP
View
B
Retailer 3
-
£3,141 GBP
View
Most Expensive
B
77 Diamonds
MQMBZ4AH8KPW · Nov 6
£3,783 GBP
View
3 more retailers have this diamond
Prices start from £2,515 GBPSave up to £1,268 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
£2,515 GBP