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Round|Lab Grown|IGI

1.20ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG759507345

Shape and cutting style on the report: Round brilliant

Certificate IGI LG759507345

Diamond specifications and retailer prices

From $193 USD
As of October 29, 2026
Save $977 USD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,170 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 IGI LG759507345 or 759507345. Listed at 20 retailers as of October 28, 2026, with prices from $193 to $1,170, a $977 spread on the same certified stone. Reve Diamonds lists it at $1,170. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG759507345
Dimensions6.86 × 6.82 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.86 mm6.82 mm1.20 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG759507345
Side View
Table 56.0%Crown 33.2°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $434 USD|Low: $183 USD|High: $1,170 USD|Avg: $489 USD|+5.5%
Retailer 1
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Retailer 18
Reve Diamonds
October 29, 2026
Retailer 8$193 USD
Retailer 6$216 USD
Retailer 14$224 USD
Retailer 2$239 USD
Retailer 3$239 USD
Retailer 16$382 USD
Retailer 4$417 USD
Retailer 1$434 USD
Retailer 13$458 USD
Retailer 12$475 USD
Retailer 18$484 USD
Retailer 17$485 USD
Retailer 15$519 USD
Retailer 10$630 USD
Retailer 5$638 USD
Retailer 9$768 USD
Retailer 7$822 USD
Retailer 11$1,123 USD
Reve Diamonds$1,170 USD

35 data points across 19 retailers

20 retailers$193 USD to $1,170 USD

A
Cheapest Retailer
-
$193 USD
A
Retailer 2
-
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$224 USD
View
A
Retailer 4
-
$239 USD
View
A
Retailer 5
-
$239 USD
View
B+
Retailer 6
-
$382 USD
View
B+
Retailer 7
-
$417 USD
View
B+
Retailer 8
-
$434 USD
£342 GBP
View
B+
Retailer 9
-
$458 USD
€436 EUR
View
B+
Retailer 10
-
$475 USD
£374 GBP
View
B+
Retailer 11
-
$484 USD
View
Retailer 12
-
$485 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$519 USD
A$798 AUD
View
B+
Retailer 14
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$630 USD
View
B
Retailer 15
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$638 USD
View
Retailer 16
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$762 USD
View
Price last confirmed 39 days ago
B
Retailer 17
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$768 USD
View
B
Retailer 18
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$822 USD
View
B
Retailer 19
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$1,123 USD
£884 GBP
View
Most Expensive
B
Reve Diamonds
207CC00A8 · Oct 28
$1,170 USD
View
19 more retailers have this diamond
Prices start from $193 USDSave up to $977 USD

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
$193 USD