Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6562648114

Certificate GIA 6562648114

Diamond specifications and retailer prices

From £4,423 GBP
HK$46,300 HKD
As of November 1, 2026
Save £5,648 GBP (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £10,071 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6562648114. Listed at 23 retailers as of October 30, 2026, with prices from £4,423 to £10,071, a £5,648 spread on the same certified stone. NZ Jewellers lists it at £10,071. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6562648114
Dimensions7.38 × 7.42 × 4.47 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
7.38 mm7.42 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562648114
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.3%

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: Nov 1
Current: £10,071 GBP|Low: £4,356 GBP|High: £10,193 GBP|Avg: £6,304 GBP|-1.2%
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 2, 2026
Retailer 11£4,393 GBP
Retailer 20£4,423 GBP
Retailer 17£4,534 GBP
Retailer 5£4,731 GBP
Retailer 7£4,757 GBP
Retailer 8£5,035 GBP
Retailer 22£5,035 GBP
Retailer 21£5,045 GBP
Retailer 6£5,455 GBP
Retailer 4£5,539 GBP
Retailer 2£5,641 GBP
Retailer 14£5,842 GBP
Retailer 12£6,148 GBP
Retailer 15£6,274 GBP
Retailer 9£6,295 GBP
Retailer 13£6,551 GBP
Retailer 23£6,633 GBP
Retailer 18£6,673 GBP
Retailer 19£7,397 GBP
Retailer 10£8,367 GBP
Retailer 3£8,437 GBP
Retailer 16£9,178 GBP
NZ Jewellers£10,071 GBP

18 data points across 23 retailers

23 retailers£4,423 GBP to £10,071 GBP

Retailer 1
-
£4,393 GBP
₹560,621 INR
Price last confirmed 7 days ago
A
Retailer 2
-
£4,423 GBP
HK$46,300 HKD
View
B+
Retailer 3
-
£4,534 GBP
$6,075 USD
View
B+
Retailer 4
-
£4,731 GBP
$6,339 USD
View
B+
Retailer 5
-
£4,757 GBP
$6,374 USD
View
B+
Retailer 6
-
£5,035 GBP
$6,746 USD
View
Final sale: no returns
B+
Retailer 7
-
£5,035 GBP
$6,747 USD
View
B+
Retailer 8
-
£5,045 GBP
$6,760 USD
View
B+
Retailer 9
-
£5,455 GBP
$7,309 USD
View
B+
Retailer 10
-
£5,539 GBP
$7,422 USD
View
B+
Retailer 11
-
£5,641 GBP
View
Retailer 12
-
£5,842 GBP
A$12,042 AUD
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£5,970 GBP
$7,999 USD
View
B+
Retailer 14
-
£6,148 GBP
$8,238 USD
View
Retailer 15
-
£6,274 GBP
$8,406 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£6,295 GBP
$8,434 USD
View
B
Retailer 17
-
£6,551 GBP
€8,359 EUR
View
B
Retailer 18
-
£6,673 GBP
View
B
Retailer 19
-
£7,397 GBP
ZAR 160,122 ZAR
View
B
Retailer 20
-
£8,367 GBP
A$17,247 AUD
View
B
Retailer 21
-
£8,437 GBP
View
Retailer 22
-
£9,178 GBP
$12,297 USD
View
Price last confirmed 7 days ago
Most Expensive
B
NZ Jewellers
24298d9f-e214-473b-ac18-a54be360c38f · Oct 30
£10,071 GBP
$13,494 USD
View
22 more retailers have this diamond
Prices start from £4,423 GBPSave up to £5,648 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 Round
£4,423 GBP