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Princess|Natural|GIA

1.51ct K SI1 Princess Natural Diamond

EX • K/SI1 • GIA 1429352738

Certificate GIA 1429352738

Diamond specifications and retailer prices

From £4,199 GBP
As of November 6, 2026
Save £1,407 GBP (25%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £5,607 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded K 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 1429352738. Listed at 2 retailers as of November 5, 2026, with prices from £4,199 to £5,607, a £1,407 spread on the same certified stone. 77 Diamonds lists it at £5,607. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1429352738
Dimensions6.38 × 6.36 × 4.58 mm
L/W Ratio1.00
Top View
6.38 mm6.36 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1429352738
Side View
Table 72.0%CrownGirdlePavilionCuletDepth 71.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: £5,607 GBP|Low: £4,146 GBP|High: £5,699 GBP|Avg: £4,924 GBP|+0.8%
77 Diamonds
Retailer 2
November 5, 2026
Retailer 2£4,199 GBP
77 Diamonds£5,607 GBP

33 data points across 2 retailers

2 retailers£4,199 GBP to £5,607 GBP

B
Cheapest Retailer
-
£4,199 GBP
Most Expensive
C
77 Diamonds
PRIMBGJCTKAKQ · Nov 5
£5,607 GBP
View
1 more retailer has this diamond
Prices start from £4,199 GBPSave up to £1,407 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 Princess
£4,199 GBP