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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1519562206

Certificate GIA 1519562206

Diamond specifications and retailer prices

From £3,098 GBP
As of November 6, 2026
Save £3,741 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £6,838 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1519562206. Listed at 19 retailers as of November 5, 2026, with prices from £3,098 to £6,838, a £3,741 spread on the same certified stone. NZ Jewellers lists it at £6,838. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1519562206
Dimensions7.31 × 7.34 × 4.50 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Top View
7.31 mm7.34 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519562206
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.4%

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: £5,397 GBP|Low: £3,098 GBP|High: £6,590 GBP|Avg: £4,656 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5£3,098 GBP
Retailer 2£3,924 GBP
Retailer 3£4,332 GBP
Retailer 1£5,397 GBP
Retailer 4£6,494 GBP

44 data points across 5 retailers

19 retailers£3,098 GBP to £6,838 GBP

B+
Cheapest Retailer
-
£3,098 GBP
B+
Retailer 2
-
£3,141 GBP
View
B+
Retailer 3
-
£3,231 GBP
View
B+
Retailer 4
-
£3,270 GBP
View
B+
Retailer 5
-
£3,447 GBP
View
B+
Retailer 6
-
£3,670 GBP
View
Retailer 7
-
£3,705 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£3,705 GBP
View
B
Retailer 9
-
£3,705 GBP
View
B
Retailer 10
-
£3,768 GBP
View
B
Retailer 11
-
£3,902 GBP
View
B
Retailer 12
-
£3,924 GBP
View
B
Retailer 13
-
£4,274 GBP
View
B
Retailer 14
-
£4,332 GBP
View
Retailer 15
-
£4,511 GBP
View
Price last confirmed 14 days ago
B
Retailer 16
-
£5,397 GBP
View
B
Retailer 17
-
£5,921 GBP
View
B
Retailer 18
-
£6,494 GBP
View
Most Expensive
C
NZ Jewellers
67ce5f8e-58e4-4c56-af8b-5abe8657d6f5 · Nov 5
£6,838 GBP
$9,204 USD
View
18 more retailers have this diamond
Prices start from £3,098 GBPSave up to £3,741 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 Round
£3,098 GBP