Oval|Lab Grown|GCAL

1.55ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • GCAL 330310150

Shape and cutting style on the report: Oval brilliant

Certificate GCAL 330310150

Diamond specifications and retailer prices

From £178 GBP
$238 USD
As of November 1, 2026
Save £1,524 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,702 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.55ct lab-grown oval diamond

This 1.55ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GCAL 330310150. Listed at 16 retailers as of November 1, 2026, with prices from £178 to £1,702, a £1,524 spread on the same certified stone. Do Amore Diamonds lists it at £1,702. 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

1.55
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 330310150
Dimensions9.23 × 6.48 × 4.02 mm
L/W Ratio1.42
Culet sizeNone
Top View
9.23 mm6.48 mm1.55 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGCAL 330310150
Side View
Table 58.0%Crown 35°Girdle: STK-THKPavilion 40°Culet: NoneDepth 62.0%

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: £1,702 GBP|Low: £158 GBP|High: £1,702 GBP|Avg: £544 GBP|+7.5%
Do Amore Diamonds
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
November 2, 2026
Retailer 14£178 GBP
Retailer 5£199 GBP
Retailer 12£206 GBP
Retailer 4£220 GBP
Retailer 6£220 GBP
Retailer 16£287 GBP
Retailer 7£327 GBP
Retailer 9£408 GBP
Retailer 10£480 GBP
Retailer 2£597 GBP
Retailer 13£700 GBP
Retailer 15£780 GBP
Retailer 3£826 GBP
Retailer 8£905 GBP
Retailer 11£977 GBP
Do Amore Diamonds£1,702 GBP

43 data points across 16 retailers

16 retailers£178 GBP to £1,702 GBP

A
Cheapest Retailer
-
£178 GBP
$238 USD
A
Retailer 2
-
£199 GBP
$266 USD
View
Final sale: no returns
A
Retailer 3
-
£206 GBP
$276 USD
View
A
Retailer 4
-
£220 GBP
$295 USD
View
Retailer 5
-
£220 GBP
$295 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£287 GBP
$384 USD
View
B+
Retailer 7
-
£327 GBP
$438 USD
View
A
Retailer 8
-
£408 GBP
View
A
Retailer 9
-
£432 GBP
$579 USD
View
B+
Retailer 10
-
£597 GBP
View
B
Retailer 11
-
£700 GBP
CA$1,302 CAD
View
B+
Retailer 12
-
£780 GBP
$1,045 USD
View
B
Retailer 13
-
£826 GBP
$1,107 USD
View
B
Retailer 14
-
£905 GBP
$1,213 USD
View
B
Retailer 15
-
£977 GBP
View
Most Expensive
B
Do Amore Diamonds
27-F68CDCAD8 · Nov 2
£1,702 GBP
$2,280 USD
View
15 more retailers have this diamond
Prices start from £178 GBPSave up to £1,524 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
1.55ct Oval
£178 GBP