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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 6565020551

Certificate GIA 6565020551

Diamond specifications and retailer prices

From £2,875 GBP
As of November 4, 2026
Save £3,521 GBP (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £6,764 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6565020551. Listed at 25 retailers as of November 1, 2026, with a 122% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565020551
Dimensions7.06 × 7.10 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.06 mm7.10 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565020551
Side View
Table 56.0%Crown 38°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 64.5%

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: Nov 4
Current: £3,892 GBP|Low: £2,836 GBP|High: £6,518 GBP|Avg: £4,024 GBP|-1.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 2£2,875 GBP
Retailer 6£3,012 GBP
Retailer 10£3,096 GBP
Retailer 5£3,173 GBP
Retailer 4£3,194 GBP
Retailer 19£3,358 GBP
Retailer 17£3,429 GBP
Retailer 18£3,601 GBP
Retailer 1£3,892 GBP
Retailer 11£4,076 GBP
Retailer 7£4,079 GBP
Retailer 12£4,130 GBP
Retailer 8£4,169 GBP
Retailer 13£4,214 GBP
Retailer 14£4,273 GBP
Retailer 9£4,332 GBP
Retailer 15£4,673 GBP
Retailer 3£4,936 GBP
Retailer 16£6,396 GBP

25 data points across 19 retailers

25 retailers£2,875 GBP to £6,396 GBP

A
Cheapest Retailer
-
£2,875 GBP
A
Retailer 2
-
£3,012 GBP
View
Retailer 3
-
£3,096 GBP
View
Price last confirmed 22 days ago
A
Retailer 4
-
£3,173 GBP
View
A
Retailer 5
-
£3,194 GBP
View
A
Retailer 6
-
£3,429 GBP
View
A
Retailer 7
-
£3,601 GBP
View
Retailer 8
-
£3,816 GBP
View
Price last confirmed 21 days ago
B+
Retailer 9
-
£3,864 GBP
View
B+
Retailer 10
-
£3,892 GBP
View
B+
Retailer 11
-
£3,989 GBP
View
Retailer 12
-
£4,044 GBP
View
Price last confirmed 29 days ago
Retailer 13
-
£4,044 GBP
View
Price last confirmed 21 days ago
Retailer 14
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£4,044 GBP
View
Price last confirmed 22 days ago
Retailer 15
-
£4,076 GBP
View
Price last confirmed 28 days ago
B+
Retailer 16
-
£4,079 GBP
View
B+
Retailer 17
-
£4,130 GBP
View
Retailer 18
-
£4,169 GBP
View
Price last confirmed 7 days ago
B+
Retailer 19
-
£4,214 GBP
View
B+
Retailer 20
-
£4,273 GBP
View
Retailer 21
-
£4,666 GBP
View
Price last confirmed 28 days ago
B+
Retailer 22
-
£4,673 GBP
View
B
Retailer 23
-
£4,936 GBP
View
B
Retailer 24
-
£6,396 GBP
View
Most Expensive
NZ Jewellers
e99821fd-24ca-470d-b8fb-9f3c19eadba6 · Sep 26
£6,764 GBP
$9,053 USD
View
Price last confirmed 40 days ago
24 more retailers have this diamond
Prices start from £2,875 GBPSave up to £3,521 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
1.50ct Round
£2,875 GBP