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Round|Natural|GIA

1.55ct I SI2 Round Natural Diamond

GD • I/SI2 • GIA 5436547702

Certificate GIA 5436547702

Diamond specifications and retailer prices

From £4,154 GBP
A$8,562 AUD
As of October 31, 2026
Save £1,084 GBP (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £5,237 GBP at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by GIA 5436547702. Listed at 4 retailers as of October 30, 2026, with prices from £4,154 to £5,237, a £1,084 spread on the same certified stone. 77 Diamonds lists it at £5,237. 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

1.55
Carat
I
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5436547702
Dimensions7.19 × 7.27 × 4.69 mm
L/W Ratio1.01
Top View
7.19 mm7.27 mm1.55 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 5436547702
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.8%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: £5,237 GBP|Low: £4,988 GBP|High: £5,272 GBP|Avg: £5,166 GBP|+1.8%
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£5,105 GBP
Retailer 2£5,224 GBP
77 Diamonds£5,237 GBP

35 data points across 3 retailers

4 retailers£4,154 GBP to £5,237 GBP

B+
Cheapest Retailer
-
£4,154 GBP
A$8,562 AUD
B
Retailer 2
-
£5,105 GBP
$6,840 USD
View
B
Retailer 3
-
£5,224 GBP
€6,666 EUR
View
Most Expensive
B
77 Diamonds
RBJBBKH8EUQ · Oct 30
£5,237 GBP
View
3 more retailers have this diamond
Prices start from £4,154 GBPSave up to £1,084 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+
1.55ct Round
£4,154 GBP