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Round|Lab Grown|GIA

1.20ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 5503786487

Certificate GIA 5503786487

Diamond specifications and retailer prices

From $270 CAD
$193 USD
As of October 29, 2026
Save $1,301 CAD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,571 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5503786487. Listed at 14 retailers as of October 29, 2026, with prices from $270 to $1,571, a $1,301 spread on the same certified stone. MOH London lists it at $1,571. 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

1.20
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginLab Grown
Grading LabGIA
CertificateGIA 5503786487
Dimensions6.80 × 6.77 × 4.23 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.80 mm6.77 mm1.20 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5503786487
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.3%

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: Oct 29
Current: $1,571 CAD|Low: $259 CAD|High: $1,582 CAD|Avg: $605 CAD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 8$270 CAD
Retailer 3$302 CAD
Retailer 9$335 CAD
Retailer 10$335 CAD
Retailer 7$448 CAD
Retailer 5$545 CAD
Retailer 4$549 CAD
Retailer 2$663 CAD
Retailer 11$677 CAD
Retailer 6$1,079 CAD
MOH London$1,571 CAD

43 data points across 11 retailers

14 retailers$270 CAD to $1,571 CAD

A
Cheapest Retailer
-
$270 CAD
$193 USD
A
Retailer 2
-
$302 CAD
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$314 CAD
$224 USD
View
A
Retailer 4
-
$335 CAD
$239 USD
View
A
Retailer 5
-
$335 CAD
$239 USD
View
B+
Retailer 6
-
$448 CAD
$320 USD
View
A
Retailer 7
-
$545 CAD
€371 EUR
View
A
Retailer 8
-
$549 CAD
£309 GBP
View
B+
Retailer 9
-
$626 CAD
$447 USD
View
B+
Retailer 10
-
$663 CAD
£373 GBP
View
B+
Retailer 11
-
$677 CAD
$484 USD
View
B
Retailer 12
-
$1,075 CAD
$768 USD
View
B
Retailer 13
-
$1,079 CAD
$771 USD
View
Most Expensive
B
MOH London
5503786487 · Oct 29
$1,571 CAD
£884 GBP
View
13 more retailers have this diamond
Prices start from $270 CADSave up to $1,301 CAD

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
1.20ct Round
$270 CAD