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Round|Lab Grown|IGI

1.55ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG801637658

Shape and cutting style on the report: Round brilliant

Certificate IGI LG801637658

Diamond specifications and retailer prices

From $567 USD
€540 EUR
As of October 29, 2026
Save $1,503 USD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,070 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801637658 or 801637658. Listed at 15 retailers as of October 29, 2026, with prices from $567 to $2,070, a $1,503 spread on the same certified stone. Brilliant Earth lists it at $2,070. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
G
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801637658
Dimensions7.42 × 7.38 × 4.59 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 Faint Blue
Top View
7.42 mm7.38 mm1.55 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801637658
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
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: $2,070 USD|Low: $340 USD|High: $2,360 USD|Avg: $979 USD|-12.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 5$340 USD
Retailer 8$567 USD
Retailer 9$571 USD
Retailer 7$597 USD
Retailer 6$608 USD
Retailer 10$609 USD
Retailer 2$842 USD
Retailer 13$890 USD
Retailer 4$1,163 USD
Retailer 3$1,330 USD
Retailer 11$1,394 USD
Retailer 12$1,875 USD
Brilliant Earth$2,070 USD

43 data points across 13 retailers

15 retailers$567 USD to $2,070 USD

Retailer 1
-
$340 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$567 USD
€540 EUR
View
A
Retailer 3
-
$571 USD
View
A
Retailer 4
-
$597 USD
ZAR 9,639 ZAR
View
A
Retailer 5
-
$608 USD
£479 GBP
View
A
Retailer 6
-
$609 USD
View
A
Retailer 7
-
$842 USD
View
B+
Retailer 8
-
$890 USD
View
B+
Retailer 9
-
$1,163 USD
View
B+
Retailer 10
-
$1,253 USD
View
B
Retailer 11
-
$1,330 USD
View
Retailer 12
-
$1,394 USD
£1,098 GBP
View
Price last confirmed 12 days ago
Retailer 13
-
$1,875 USD
View
Price last confirmed 12 days ago
Retailer 14
-
$1,880 USD
View
Price last confirmed 26 days ago
Most Expensive
B
Brilliant Earth
19934393A · Oct 31
$2,070 USD
View
14 more retailers have this diamond
Prices start from $567 USDSave up to $1,503 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
1.55ct Round
$567 USD